Well, in the USA, being offended by a movie that doesn't agree with your religious beliefs is not actionable. I don't know about Italy.
In my opinion, the answer to such movies is different:
If the film offends.
Please don't attend.
If the facts don't fit
You must quit (the theatre).
"If the film offends.
Please don't attend."
Were you *trying* to write like Johnny Cochran or am I sensitive?
If a person's faith can't withstand a trite little tome/movie like the Da Vinci Code I would submit they have no faith.
With that said, such laws are a very bad idea, and unless the Cardinal is making the point that hate crime laws can bit liberals too, he ought not to push it.